dosatron D14MZ2 User manual

Instructions
(Parts included in kit noted in blue)
1.
PDI735
Unscrew
hose nut
(PDI735)
and remove
the hose.
Disassembly
NOTE: Reassembly instructions
on back.
Kit Contents:
(1) J009:
Plunger seal
(1) PDI739:
Top Guide
(1) PDI729:
Check Valve
Cone
(1) MDI358: Check
Valve Spring
(1) JDI105:
Check Valve
Cone O-ring
(1) DOSA-LUBE:
Silicone
2. Unscrew the
check valve
nut (PDI734).
Remove the
check valve
assembly
(PJDI115)
by pulling
it down.
5.
Unscrew the
adjusting sleeve
(PPDI036) until it
comes o󰀨. Hold
the black sleeve
(PDI728) and push
up on the threaded
part of the white
injection stem
(PDI730) then
slide it out of the
black sleeve
(PDI728) from
the top.
PDI730
PDI728
PPDI036
Unscrew the
upper bell
housing
(PDI685) and
remove the
piston assembly
(PCDI030) out
of the unit.
PDI685
PCDI030
J009
PJDI114
7.
8.
Unscrew the locking nut (PDI733)
from the injection stem assembly
(CDDI074) and remove the black
PDI730
PDI727
PDI733
anti-rotation
lock (PDI727)
by spreading
it apart, then
slide it down
over the
threads of
the injection
stem (PDI730).
PDI702
CDDI074
Unscrew injection stem assembly
nut (PDI702) and pull down on the
injection stem assembly (CDDI074)
to detach from the body of the unit.
Take o󰀨 the top
guide (PDI739)
by giving it a 1/4
turn counter
clockwise, and
discard.
Discard the
check valve
spring (MDI358),
check valve
cone (PDI729)
and check
valve cone
o-ring (JDI105).
PDI739
JDI105
MDI358
PDI729
PDI734
PJDI115
3.
4.
6.
From the tip
of the plunger
(PJDI114),
remove the
plunger seal
(J009), pinch
the seal, roll it
o󰀨, then discard.
Use Dosa-Lube on
specied parts only.
CAUTION: Parts may contain
concentrated chemicals. The use of
Proper Protective Equipment is recom-
mended when performing maintenance.
Mini
Maintenance Kit
1-800-523-8499
www.dosatronusa.com
Part #:
PJDI116MINI-H
D14MZ2 - 14 GPM

Don’t forget to reset your
injection rate to the proper ratio.
Reassembly
9. Using the Dosa-Lube provided in
the kit, rub a small amount onto the
injection stem o-ring (JDI120) and
the black stem o-ring (JDI100).
JDI120
JDI100
Slide the white
injection stem
(PDI730)
down into the
black sleeve
(PDI728),
making sure
the small key
located inside
the sleeve is
properly aligned
with the longest
groove on the
white injection
stem (PDI730).
10.
PDI728
PDI730
11. Pull down on the
white injection
stem (PDI730)
as far as it
will go. Screw
the adjusting
sleeve
(PPDI036)
back onto
the black
injection
sleeve (PDI728).
PDI730
PPDI036
PDI728
15. Take the new
plunger seal
(J009) and
place it on
the groove of
the plunger
(PJDI114) at
the bottom of
the piston. J009
PJDI114
Attach the injection stem assembly
(CDDI074) to the bottom of blue
body by
make sure
to cut in
a straight
line.
Attach
the hose
and the
hose nut
(PDI735)
back to the
unit.
18. Cut 1” o󰀨 from the top of the
suction hose to ensure a tight t,
PDI735
PDI702
CDDI074
17.
PDI739
MDI358
PDI740
PDI729 JDI105
14. Insert the new check valve assembly
(PJDI115) back into the bottom of the
injection stem assembly (CDDI074)
and screw the check valve nut
(PDI734) back on.
CDDI074
PJDI115
PDI734
Take the new check valve cone
(PDI729)and install the new check
valve cone o-ring (JDI105). Place
the cone part going down into the
check valve barb (PDI740). Insert
the new check valve spring (MDI358)
onto the rod of the check valve cone
(PDI729), place the new top guide
(PDI739) on top and push down,
then turn 1/4 clockwise until the top
guide locks into the check valve
housing (PDI740). Apply Dosa-Lube
on the check valve o-ring (JDI130).
Do not apply Dosa-Lube inside the
check valve.
13.
12. Reinstall the “C” clamp (PDI727) by
gently sliding it over the threads at
the bottom of the white injection
PDI727
PDI730
PDI733
stem (PDI730).
Rotate
the clamp
until it locks
in place.
Screw
back the
locking nut
(PDI733).
sliding the
injection
stem nut
(PDI702)
up the
sleeve
and screw
it back on.
16. Insert the piston assembly
(PCDI030) into the lower housing,
then screw the upper bell housing
back in place.
PDI685
PCDI030
JDI130